1/*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2001 Jake Burkholder. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29#include <sys/cdefs.h> 30__FBSDID("$FreeBSD$"); 31 32#include <sys/types.h> 33 34#include <machine/utrap.h> 35#include <machine/sysarch.h> 36 37#include <errno.h> 38#include <signal.h> 39#include <stdio.h> 40#include <stdlib.h> 41#include <string.h> 42#include <unistd.h> 43 44#include "fpu_extern.h" 45#include "__sparc_utrap_private.h" 46 47extern ssize_t __sys_write(int, const void *, size_t); 48extern int __sys_kill(pid_t, int); 49extern pid_t __sys_getpid(void); 50 51static const char *utrap_msg[] = { 52 "reserved", 53 "instruction access exception", 54 "instruction access error", 55 "instruction access protection", 56 "illtrap instruction", 57 "illegal instruction", 58 "privileged opcode", 59 "floating point disabled", 60 "floating point exception ieee 754", 61 "floating point exception other", 62 "tag overflow", 63 "division by zero", 64 "data access exception", 65 "data access error", 66 "data access protection", 67 "memory address not aligned", 68 "privileged action", 69 "async data error", 70 "trap instruction 16", 71 "trap instruction 17", 72 "trap instruction 18", 73 "trap instruction 19", 74 "trap instruction 20", 75 "trap instruction 21", 76 "trap instruction 22", 77 "trap instruction 23", 78 "trap instruction 24", 79 "trap instruction 25", 80 "trap instruction 26", 81 "trap instruction 27", 82 "trap instruction 28", 83 "trap instruction 29", 84 "trap instruction 30", 85 "trap instruction 31", 86}; 87 88void 89__sparc_utrap(struct utrapframe *uf) 90{ 91 int sig; 92 93 switch (uf->uf_type) { 94 case UT_FP_EXCEPTION_IEEE_754: 95 case UT_FP_EXCEPTION_OTHER: 96 sig = __fpu_exception(uf); 97 break; 98 case UT_ILLEGAL_INSTRUCTION: 99 sig = __emul_insn(uf); 100 break; 101 case UT_MEM_ADDRESS_NOT_ALIGNED: 102 sig = __unaligned_fixup(uf); 103 break; 104 default: 105 break; 106 } 107 if (sig) { 108 __utrap_write("__sparc_utrap: fatal "); 109 __utrap_write(utrap_msg[uf->uf_type]); 110 __utrap_write("\n"); 111 __utrap_kill_self(sig); 112 } 113 UF_DONE(uf); 114} 115 116void 117__utrap_write(const char *str) 118{ 119 int berrno; 120 121 berrno = errno; 122 __sys_write(STDERR_FILENO, str, strlen(str)); 123 errno = berrno; 124} 125 126void 127__utrap_kill_self(int sig) 128{ 129 int berrno; 130 131 berrno = errno; 132 __sys_kill(__sys_getpid(), sig); 133 errno = berrno; 134} 135 136void 137__utrap_panic(const char *msg) 138{ 139 140 __utrap_write(msg); 141 __utrap_write("\n"); 142 __utrap_kill_self(SIGKILL); 143} 144